CZ209996A3 - Apparatus for wheel set drive - Google Patents

Abstract

Equipment for driving a set of wheels of railway vehicles joined or not joined to the chassis is used mainly for equipment for processing the driving profiles of their wheels (K). It consists of a pair of pulleys (21,31) between which there is a wheel (K). Each of the pulleys (21,31) is rotary-mounted in the box (2,3) which are mutually approachable. Between the boxes (2,3) there is a pressing mechanism (4).<IMAGE>

Description

The present invention relates to a device for driving wheelset of rail vehicles not tied or unloaded from a bogie, especially when machining their driving profiles on sub-level machine tools.

The prior art described in the prior art is disclosed

When working out the unset wheelsets, there is usually no problem with their rotational movement. Can be used for turning conventional jigs. However, when machining a wheelset, especially those whose bearings are outside the wheelset of the castors, there is a problem with the generation of sufficient torque needed for machining of the driving profile. . Therefore, it is common to use radial rollers on which the wheelset is the driving profile. These radial rollers are driven. For unbalanced: the wheelset pressure against the radial pulleys ensures a vehicle which is usually seated on traction vehicles.

Wheelset sufficient. If the machined wheelset is in the coupled 'bogie', then - it is ^- necessary - to lower the bogie - to apply a thrust force and thus additionally ensure adhesion. If the wheelset is tied, but with bearing housings, it is possible to apply a thrust to the bearing housings, which also ensures adhesion. It is necessary to considerably dimension the contact force with respect to the resistance generated by the machining process. Also, the unstable adhesion of the radial rollers to the machined surface of the driving profile is due to the phenomena accompanying both machining and high specific pressures at the points of cold contact between the radial rollers and the machined wheel. There, metalloids are formed, resulting in a variable coefficient of friction and consequently a variable adhesion.

However, a device consisting of a pair of pulleys is known, at least one of which is driven and insertable between | wheelset. The rollers are arranged on the collet arms which can be pivoted around the pins on the machine frame. The pivoting of the arms around the pins, which is exerted by the force elements, results in the wheels of the wheelset being gripped by opposed pulleys. Torque is applied to the pulleys with respect to their adjustability by a system of flexible shafts. Such a device has considerable advantages over radial roller devices, but it has a large number of rotating parts, which are predetermined by the transmission of the torque of the flexible shafts.

SUMMARY OF THE INVENTION

The above-mentioned drawbacks are eliminated by the device according to the invention for the propulsion of rail vehicles not tied or unloaded from the chassis, intended primarily for devices for machining their driving profiles. It consists of a pair of pulleys, at least one of which is driven. Between the pulleys there is an insertable wheel set. Each of the rollers is rotatably mounted in the housing. The cabinets can be approached together by a thrust device which is arranged between the _____________ cabinets. _____________________________________________— ----- I »

The transmission of the torque can be carried out by a shaft guided from the engine and any of the pulleys is connected to this wing by means of a gear. This makes it possible to use the possibility of regulating the motor, which is usually an electric motor.

Torque transmission to pulley. it can also be realized with a hydraulic motor. Such a device is characterized by considerable compactness.

It is advisable to place the pressure device on a bracket protruding from the fixed housing. An adjustable housing is provided between the fixed housing and the thrust device. The pressure device can then be designed as a low-lift hydraulic cylinder. '

Re-opening of fixed and adjustable housing l | and the subsequent release of the wheelset wheel is provided by a spring incorporated between the two housings.

• · _t r Ί.

Optimum kinematic ratios of transfer of circumferential force from pulley to wheel will ensure the pulleys with conical surface and eventual elimination of undesirable side effects of the pulleys with the surface of accumulated.

X '' circumferentially přeňosir 'forces ^R' '' S * 'vyloučením- - then slip pulley' surface provided with projections.

It is a side effect of rotation.

Advantageously, the housings are displaceably disposed relative to the frame, eliminating the undesired force due to lateral deformation of the wheelset wheels at

It is advantageous if the adjustments are arranged between the carriages.

to guarantee lateral one of the cabinets and frame

The stiffness of the lateral displacement of the carriage provided with the carriage can be adjusted either by the pressure bar or by an adjustable wedge inserted between the guide tongue and the carriage.

. ............... ....... ·. · '^; t

BRIEF DESCRIPTION OF THE DRAWINGS FIG

Fig. 1 is a cross-sectional view of the device according to the invention perpendicular to the plane of the wheel set of the wheelset, Fig. 2 and Fig. 3 with an adjustable wedge. 4 with an adjustable wedge.

Description of an exemplary embodiment>

The frame 1 is rigidly disposed laterally

The housing 2 connected to the bracket 22 is also formed from below. On the part connecting the fixed housing to the bracket 22, carriages 23 are formed, moving on the guide tongue 11 on the frame 7 by means of a groove 24. A pressure device 4 formed by a hydraulic cylinder An adjustable housing 3 is mounted between the pressing device 4 and the fixed housing 2. The fixed housing 2 is provided with a fixed roller 21 and the adjustable housing 3 is provided with an adjustable roller 31. Both rollers 21, 31 are rotatably mounted in the boxes 2,3. A drive shaft 5 permeates the two housings 2,3 with which each of the rollers 21, 31 is connected by a gear 6 formed by a pair of bevel gears. The drive shaft 5 is supplied with torque from its source by an auxiliary transmission 51. The source of torque is generally provided by an electric motor. In another case not shown, the hydraulic motor connected to either of the pulleys 21, 31 can be provided either directly or by means of a gear 6. A spring 2 is inserted between the two housings 2,3.

In the illustrated embodiment, the rollers 21, 31 have a conical surface, where the cone surface lies in the plane of the wheel face K and the axis of the cone is rotated. wheels_in the point of intersection of the wheel axis_. _hoho rovinou čela._

However, it is advantageous to increase the transmission efficiency when the surface of the pulleys is crowned or provided with protrusions, or both simultaneously. In order to provide the necessary rigidity of the lateral movement of the slide 23 along the frame 11, it is suitable if an adjustable wedge 12 is adjustable between the slide 23 and the frame.

After the wheelset has been set up in the machining position, the adjustable housing 3 approaches the fixed housing 2 by means of the thrust device 4. At the same time, the bevel gear gear 11 in the adjustable housing 3 is moved along the drive shaft 5, which is provided with spline for this purpose. Zoom in to both cabinets

2.3, the 'spring' 2 was compressed 2.

to grip wheel K between rollers 21,31. By rotating the drive shaft 5 from the auxiliary transmission 51, they are over the toothed transmission 11

6, the pulleys 21, 31 are rotated. The roller thrust size 21.31 \ produced by the thrust mechanism. forces transmitted from ‘source; load torque transmissions; predestine. * * the amount of usable force. for machining the driving profile.

Due to the nature of the transmission, the torque from the rollers 21.31, the wheel K is necessary to minimize the effect of impurities such as e.g. residues of lubricants from the operation of the rail vehicle, by removing them before setting them into the machining position.

There are two de-facto-and-round-and-round-and-roll-out operations. For this reason, the housings 2,3 are arranged laterally adjustable relative to the frame. By means of the slide 23, the rigidity of the slide bearing 23 on the frame 7 is achieved either by the adjustable pressure of the strips 12 or by the optional / insertion of the wedge -13.

the arrangement of the housings 2,3 with respect to the frame 1 ensures a permanent and pre-selectable grip of the wheel K between the shelves 21, 31 and thus a constant amount of circumferential force usable in the machining of the wheel profile K.

Claims (12)

An apparatus for driving a wheel set of a rolling stock not tied or unloaded from a bogie, in particular for machining its driving profiles, consisting of a pair of pulleys, at least one of which is driven and between which a wheel set wheel is insertable, 31) is rotatably mounted in a casing (2,3) which can be approached to each other, and a pressure device (4) is arranged between the casing (2,3). Device according to claim 1, characterized in that at least one of the rollers (21, 31) is connected to the drive shaft (5) by means of a gear (6). Device according to claim 1, characterized in that at least one of the pulleys (21, 31) is connected to a hydraulic motor. fy 4 -, - 5 -, - 6 - or - 7 characterized by < I.e 72 - j what Art C' cn j cn -ΐ X, . < σ O . > - · Oc »» 1 τ * _L ~ X σ c / x ! 31 [—I < • T> what O AND Cn zn t in that the surface of the rollers (21, 31) is provided with protrusions. AND, Device according to claim 1, 2 or 3, characterized in that the pressing device (4) is mounted on a bracket (22) protruding from the fixed housing (2) against which it is displaceable, the adjustable housing (3) being positioned between the fixed housing (2) and the thrust device (4). Device according to claim 4, characterized in that a spring (7) is interposed between the fixed housing (2) and the adjustable housing (3-3). Device according to claim 1, 2 -, - 3 -, - 4 - or - 5, characterized in that the rollers (21, 31) have a conical surface. O Apparatus according to claim 1, -2. 3, 4 _, 5 or 6, characterized in that the surface of the rollers is bumpy. Apparatus according to claim 1 The apparatus according to claims 2, 3, 4, 5, 6, 7 or 8. by saying that the cabinets' (2,3) 'are'. against the frame. (1) · Arranged laterally adjustable. * ', · · \ - '·' ý-. b · h 7- y \ Device according to Claim 9, characterized in that between one of the housings (2,3). and a frame f1) are provided with a slide (23) / · / '***? · 'J ,: »i. í ~ ..... ...... ~ - -4t. .7 · J., .. .... . · Ft Device according to Claim 10, characterized in that a pressure bar (12) is adjustable between the slide (23) and the frame (1). Device according to claim 10, characterized in that a longitudinal groove (24) is formed in the inlet (23) or in the frame (1) in which the guide tongue (11) is arranged. ^F7: between ^ and ^ ^ kťéfým SANE ^ / SO '· is- ^"λ loaded adjustable wedge (.13).> b, ^{R' in}